How To Fix AO492 - Error during number assignment - order cannot be created

SAP Error Message - Details

• Message type: E = Error

• Message class: AO - Appropriation requests - Master data / Customizing

• Message number: 492

• Message text: Error during number assignment - order cannot be created

What causes this issue?

An error occurred during assignment of the order number.

System Response

The order was not created.

How to fix this error?

Check Customizing for number assignment of maintenance orders.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AO492 - Error during number assignment - order cannot be created ?

  The SAP error message AO492, which states "Error during number assignment - order cannot be created," typically occurs when there is an issue with the number assignment for a particular order type in the SAP system. This can happen in various modules, such as SAP PM (Plant Maintenance), SAP PS (Project System), or SAP CO (Controlling), where order numbers are automatically generated.
  Causes of AO492 Error
  
  
  Number Range Issues: The most common cause is that the number range for the order type has been exhausted or is not properly defined. This means that the system cannot assign a new number because it has reached the upper limit of the defined range.
  
  
  Configuration Errors: There may be configuration issues in the number range settings for the order type. This could include missing or incorrectly set intervals.
  
  
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to create an order, which can lead to this error.
  
  
  System Locking: If the number range is locked for some reason (e.g., during a system upgrade or maintenance), it can prevent new orders from being created.
  
  
  Custom Development: If there are custom developments or enhancements that affect number assignment, they may be causing the error.
  
  
  Solutions to AO492 Error
  
  
  Check Number Range Configuration:
  
  Go to the transaction code SNRO (Number Range Objects).
  Find the relevant number range object for the order type you are trying to create.
  Check the intervals defined for the number range and ensure that there are available numbers. If the range is exhausted, you may need to extend it.
  
  
  
  Adjust Number Range:
  
  If the number range is exhausted, you can create a new interval or extend the existing one. This typically requires administrative access.
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary authorizations to create orders. This can be checked in transaction SU53 or by reviewing the user's role assignments.
  
  
  
  Check for Locks:
  
  Verify if there are any locks on the number range. This can be done by checking the system logs or consulting with your SAP Basis team.
  
  
  
  Consult with Development Team:
  
  If there are custom developments affecting number assignment, consult with your ABAP developers to identify any issues in the code.
  
  
  
  System Restart:
  
  In some cases, a system restart may resolve temporary locking issues.
  
  
  
  Related Information
  
  
  Transaction Codes: 
  
  SNRO - Number Range Object Maintenance
  SU53 - Authorization Check
  SM21 - System Log
  SE11 - Data Dictionary (to check table definitions)
  
  
  
  Documentation: Review SAP documentation related to number range management for your specific module (PM, PS, CO) for more detailed guidance.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the AO492 error.
  
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP support team or consult SAP support for further assistance.